LogFAQs > #972943658

To get lean and defined you workout with a calorie deficit to lose fat so your existing muscles show better. To get stronger you workout with a calorie surplus to gain muscle, but also makes you gain fat so there's less definition.

Usually people gain muscle then switch to a deficit to lose the fat and increase definition in the muscles they gained. It's long process. You can try to gain muscle while staying lean but it's a lot more difficult for most people and takes longer.